Check if checkbox checked jquery

Show hide input field on the basis of checkbox hidden or visible

by Aamir Shahzad

HTML

<input id="checkbox" type="checkbox" />

JavaScript

$(document).ready(function () {
    var ckbox = $('#checkbox');

    $('input').on('click',function () {
        if (ckbox.is(':checked')) {
            alert('You have Checked it');
        } else {
            alert('You Un-Checked it');
        }
    });
});